Adjustable staging.



PATBNTED JULY 21, 1903.

J. A. HAGAN.

ADJUSTABLE STAGING.

APPLICATION mum we. 8. 1902.

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PATENTED JULY 21, 1903.

J-v A. HAGAN. ADJUSTABLE STAGING.

APPLIOATION FILED AUG. 8, 1902.

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J. A. HAGA-N.

ADJUSTABLE STAGING.

APPLIOATIONI'ILED AUG. 8, 1902.

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I UNITED ST TES Patented July 21, 1903.

PATENT OFFICE.

JOSEPH A. HAGAN, F JANESVILLE, WISCONSIN.

ADJUSTABLE STAGING.

SPECIFICATION forming part of Letters Patent No. '734,321, dated July21, 1903. I

Application filed August 8, 1902.

To a whom it may concern:

Be it known that I, JOSEPH A. HAGAN, of Janesville, in the county ofRock and State of Wisconsin, have invented new and useful Improvementsin Adjustable Staging; and I do hereby declare the following to be afull, clear, and exact description of said invention, reference beinghad to the accompanying drawings, and to the figures of ref-. erencemarked thereon, which form a part of this specification.

My invention relates to improvements in adjustable staging, andespecially the adjustable staging shown and described in Letters Patentof the United States issued to me on the 1st day of February, 1898, andnumbered 598,289. This application relates to certain details enteringinto the cons'truction of said adjustable staging. v

In the drawings, Figure 1 is aside elevation of that portion of anadjustable staging embodying my improvements. Figs. 2, 3, 4, 5, and 6are details. Fig. 7 is a side eleva tion of my complete'device.

. The same reference-figures indicate identical parts in the severalviews.

My adjustable staging, asshown and de scribed in said Letters Patent No.598,289, consists of two upright ladders, upon the standards of each ofwhich is adjustably niounted a jack, and to the four jacks so mounted isattached a horizontal platform.

The ladders are provided with a base broadening and equalizing device.Being fully aware of the scope of said patent, Ido not herein claim theconstruction therein shown; but I do show and describe and shall claimcertain new, novel, and very useful details which I have lately embodiedin the construction of said staging.

In the drawings (see Fig. 1) is shown a portion of the standard of aladder 1.

2 is a portion of the platform.

3 is the coupling rod of a jack.

4 is a brace connecting platform 2 and the jack and serves both as asupport for said platform and a means of preventing endwise swaying ofthe staging.

5 is a tension-rod extending along theun- 5o der side ofthe platform tostiffen same.

7 and 7 are the mountings of the jack.

' 8 represents flanged rollers, of which there Serial No. 118,926. (Nomodel.)

are two attached to each mounting and adapted to travel up and down thestandards 1.

9 is a handle attached to the coupling-rod 3, which serves as aconvenient means of raising and lowering the jack.

10 is a' hook which is swingingly mounted in the escutcheon of thehandle 9, said hook being adapted to support the jack and itssuperimposed platform.

11 is a finger-piece or trigger by means of which the hook is operated.

12 is the platform connection and tensionrod socket.

13 and 14 are brace ends.

The construction and operation of my device is substantially'as follows:As should be understood, there are two standards to each ladder and one.ladder at each end of the horizontal platform, each standard having ajack mounted thereon, each standard, jack, brace, mounting, &c., beingthe same as those shown in Fig. 1. The mountings 7 and 7 consist of anL-shaped casting, on the vertical arm of which is formed a housing 15,Figs.

2 and 3, to receivethe endof an upright coupling-bar or jack-stick 3 andon the other end or horizontal arm of which are formed two hollowstub-shafts 16, extending inward at a right angle to the arm on whichthey are located. (Shown in- Figs. 2 and 3.) Upon each stub-shaft isplaced. a flanged roller 8, the distances between the flanges of eachroller being equal to the thickness of the standard 1 and the distancebetween the peripheries 0f thetwo rollers being equal to the width ofsaid standard. Roller 8 is secured .upon its respective stub-shaftbymeans of a bolt 6 and a washer 6. The bolt is passed through the holein the stub-shaft, washer 6 is placed upon said bolt, and the nutscrewed I tightly in place, clamping the washer against the free end ofthe stub-shaft, and for the purpose of insuring the free rotation ofroller 8 said roller is made somewhat shorter than the stub-shaft andrevolves freely thereon? Upon the vertical arm of the mounting on theside opposite the horizontal arm is formed an eye, which on theuppermounting? serves IOO as a means of attaching the platform 2 and on lowermounting 7 serves as a'means for attaching brace 4. The mountings 7 and7 thus constructed roll up and down easily on standards 1 and are mucheasier to operate, cheaper to construct, and neater in appearance thanthe clasps shown in the patent aforesaid. The platform connection 12(see Fig. 6) is formed upon one side ,into a housing to receive one endof the platform-stringer and is provided with suitable holes forsecuring said connection and said stringer together. An eye 18 is formedon said connection, through which and through eye 17 on mounting 7 ispassed a rod 19, which serves to secure platform 2 to mounting 7. Uponthe lower side of connection 12 is formed a socket 20, which receivesthe end of tension-bar 5, the other end of which tension-bar is held bya similar socket upon the. other end of the platform. Said rod 5impinges against a bridge 21, attached to the under side of the platformat the center thereof, and thus supported the platform is light and ofample strength. Brace 4 is attached at one end to eye 17 on mounting 7and at the other end to a loop or staple 22, attached to the platform,which staple admits of the outward swing of the lower end of the braceas the jack conforms to the spread of the standards 1 of the ladders.The jacks and platform are sustained at any desired height by means ofthe hook 10, which engages a round of the ladder. The handle 9 at thebase is formed into an escutcheon 23, through which holes are drilled tosecure same to rod 3. Upon said escutcheon on the side opposite to andsomewhat below the handle 9 is formed a sleeve,which passes through rod3. Through this sleeve from the side opposite the handle 9 is insertedthe shank 24 of hook 10, which shank extends through the escutcheon, andsaid extension is made square to take trigger or finger-piece 11, saidtrigger being secured in place by a split cotter passing through theshank or other suitable means. Thus it will be readily understood thathook 10 is on the inside of coupling-rod 3 and the handle for raisingthe jacks is on the opposite or outside of said rod 3, and myconstruction 10- cates the trigger or finger-piece 11 also outside andjust beneath said handle 9 and in such a relative position thereto thatas said handle 9 is grasped to raise the jack a finger may be placedabout the trigger and a slight pressure on same will disengage thetheretoattached hook from the round of the ladder, permitting the jackto be moved as desired.

Having described my device, what I claim as new, and desire to secure byLetters Patent, is-

1. In an adjustable staging, the combination of two uprightladders,ajack adjustably mounted upon each of the standards of said ladders,mountings upon each end of the coupling-bars of said jacks, two flangedrollers upon each of said mountings, adapted to travel upon thestandards of said ladders, an eye in each of said mountings adapted forthe attachment of a platform and of a brace, a platform attached to theuppermost of said mountings, a brace attached at one end to saidplatform, and attheother end to the eye in the lower mounting, atension-rod upon the under side of said platform, a hook attached toeach of the coupling-bars of said jacks, adapted to engage the rounds ofsaid ladder and to secure said jacks and the theretoattached platform inthe desired position, all combined, arranged and operating,substantially as described and for the purpose specified.

2. In an adjustable staging, consisting of the combination of twoupright ladders, with platform-jacks traveling thereon, and connected byand supporting a horizontal platform, ahandle attached to said jacks, abase or escutcheon as an integral portion of said handle, a sleeve uponsaid escutcheon on the side opposite to said handle, in combination witha hook, having a shank adapted to be inserted in said sleeve, said shankbeing adapted for the reception of a trigger, substantially as shown anddescribed.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH A. IIAGAN Witnesses:

F. P. STARR, Tr-nro. W. GOLDIN.

